Combined air filter and grill



FIG. 1 is a front elevational view;

FIG. 2 is a right side elevational view;

FIG. 3 is a left side elevational view;

FIG. 4 is a top view;

FIG. 5 is a bottom view;

FIG. 6 is a rear left side perspective view; and,

FIG. 7 is a front left side perspective view thereof. 

The ornamental design for a "combined air filter and grill," as shown. 